FULL ROTATION MODEL OF SINGLE ROLL CONTINUOUS SHEET CASTING PROCESS

two-dimensional heat and fluid flow model of the single roll continuou s sheet casting process, previously formulated by the present authors, has been further refined by taking into consideration full rotation o f the easter drum. In each rotation, the drum passes through three dif ferent heat exchange zones: solidification zone, sheet cooling zone, a nd no sheet zone. Considering heat exchanges in these three zones, it has been possible to theoretically estimate the temperature of the cas ter drum at its entry point in the metal pool, which was hitherto assi gned a value arbitrarily. Some fine tuning of the heat transfer coeffi cients at the sheet/easter drum interface and water cooled inner surfa ce of the drum has been necessary. The model, after these refinements, has been used to predict sheet thickness values and complete temperat ure profiles in the sheets as well as the easter drum for aluminium an d stainless steel sheets under various operating conditions. The effec ts of process parameters on sheet thickness and thermal behaviour are discussed. IS/1305 (C) 1998 The Institute of Materials.